seheke



3 Sheets-Sheet 1.

(No Model.)

R. SBHRKB. ROVING FRAME.

Patented 1366.211881.

SES:

ATTORNEY N. PETERS..Pnolwmhogmphan washington. D. C.

(No Model.) 3 Sheets-Sheet 2.

R. SEHRKE.

ROVING FRAME.

Patented Dec. 27,1881.

WITNBSSES: V NvNToR /w wmg BY 3 ATTORNEY N. PErERS. Pnmu-uxhngnpher. wnslingmn. D. c.

` 3 Sheets-Sheet 3; R. SEHRKE.

ROVING FRAME.

(No Model.)

Patented Deo. 27,1881.

INVENTQR 1 WSS: /f/ 7/ .2% giga ATTORNEY N. FETERS. Fhumlilhogmplmr. wqsmngw, n c.

UNITED STATES PATENT OFFICE.

RICHARD SEHRKE, OF BERLIN, GERMANY, ASSIGNOR OF ONE-HALF TO BULDGE 85 HILDEBRANDT, OF SAME PLACE.

ROViNG-FRANI E.

SPECIFICATION forming part of Letters Patent No. 251,475, dated December 27, 1881.

Application tiled May 21, 1881.

To all whom it may concern Be it'known that I, RrcHARD SEHRKE, residing at the city of Berlin, in the Kingdom of Prussia, German Empire, have invented Improvements in Roving-Frames, ot' which the following is a specification.

In the process of spinning-to wit, the drawing out and twisting of parallel fibers into a yarn-the operation of imparting but a slight degree of twist to the yarn, which may even afterward be undone, is called the roving7 In the wellknown roving and spinning frames heretofore used the twisting of the liber into a cord has to be necessarily followed by a winding up of the same. This winding up, of the cord is intended to be dispensed with by the roving-frame which forms the -subject of this application, so that the yarn formed thereby is simply conducted away. My improved roving-frameis consequentlyspecially adapted to be connected immediately and directly to a spinning-frame. Furthermore, in all roving and spinning frames heretofore in use the bundle of parallel fibers which constitute the band or roving is first stretched and then conducted continuously or intermittently to the twisting mechanism, so as to receive the required twist and be then wound up.

This invention is designed to conduct the roving in a uniform manner from a paying-out drum to a point which is near the twisting devices, and after twisting it by these devices to carry it away quickerby the drawing pressurerolls than the roving or only partly-twisted 5 part is allowed to follow. I thus obtainfa drawing action on the partially-twisted roving which is between the twisters and roving-carriers.

For the purpose of confining the drawingof.

the roving toa certain determinate length it is necessary to retain the same by means of clampnated the tube The roving is retained longv enough by one set of clamps or tongs until the next set takes hold of the saine, so that always a certain determinedlength vof roving is ex These are arranged on an end- (No model.)

mechanism by which this operation is accomplished will be hereinafter fully described, and finally be pointed out in the claims.

I-n the accompanying drawings, Figure 1 is a sectional view of three tongs and their cndless belt or apron applied on flanged rollers, which are represented by endviews detached from the rovngframe. Fig. 2 is a top view of the endless belt, its flanged rollers, and two of the tongs. Fig. 3 is a view ofone end of Fig. 2. Fig. 4 represents details of the tongs or clamping mechanism. Fig. 5 is a side view of the conducting mechanism, shown a-s connected with the twisting device; and Figs. 6 and 7 are respectivelya side elevation and a plan view of a roving-frame, showing a number ot' conducting, drawing, and twisting devices.

Similar letters of reference indicate corresponding parts. y

In describing my invention it is preferable -to begin with the working of the conducting mechanism, as shown in Fig. 5, which represents the roving-frame in a diagrammatic manner. 'Y

On a roll, L, which turns in the direction of the arrow, is arranged the drum M, upon which the roving ois wound. The roving rests upon the roll L, and is carried loff by the friction therewith, so that the velocity by which the roving isl unwound from the drum is equal to the circumferential velocity ofthe roll L, consequently ot' a'constant nature. The rovi-ng o passes throughguides a c', and then to an endlessbelt or apron, (J, which is stretched over two flanged rollers, Aand B, and provided with the clamps K K K2, which are arranged equidistant from each other upon the endless belt. The belt C moves with the same speed and in lthe same direction as the roving o, so that the latter, when clamped by the first set of tongs K, is not stretched, but simply retained and supported in line with the guides c. As soon as the tongs K arrive at their second position,

I, as indicated on Fig. 5, at the point where K is shown in-Fig. 5, it releases the roving be- 't'ore the belt turns to pass around the roller B,

while simultaneously `therewith the"tongs K2 have movedupinto the position formerly held by' K and have clamped the roving. The roving which is thus carried forward by the traversing tongs passes through a thread-guide, l), and tube P to and between the rolls Q and R, which are arranged immediately front of the tube P, to be conducted away from them for being directly or indirectly wound up, or to be delivered directly and immediately to a spinning-frame for final twisting.

The tube P is rotated by a contact-roll, uf, which is arranged below the same with its axis parallel to the axis ot' the tube. The threadguide bis arranged eccentrically to the axis of the tube. The thread is twisted in the usual manner. The increased twist imparted to the yarn to each unit of space between the tubes and rolls over the twist imparted to the yarn between the tubes and oonductin g-ton gs is the result of the close proximity of the said tubes and rolls, and the slighter twist imparted to the yarn before it reaches the tube is taken therefrom after the same has passed the tube. As consequently that portion of the thread back of the tube is only slightly twisted, it is,

preferable to impart a simultaneous drawing` to the same. This drawing is obtained by imparting to thc pressure-rolls Q and R such a velocity that they conduct the twisted yarn off at a considerably greater speed than the untwisted yarn can be conducted by the tongs to the rolls. In this manner the pressure-rolls have thev additional function of drawing-rolls. The drawing out itself can only take place at that portion of the yarn which is only partly twisted-that is to say, between the tube P and the last set of tongs. y

For the purpose of allowing the roving to be easily taken hold of by the tongs and guides, they are open at the upper part, the tube being also slit in the usual manner, as in other roving-frames.

Having thus described the general working of my improvement in connection with Fig. 5, I now proceed to explain the construction of the clamping mechanism shown in Figs. 1 to et.

Each set of tongs consists of a transverse rail, D, which is secured rmly to the endless belt C. Upon the rail D are fastened one or more guides, E, by means of sidewise-extendin g .heels e', between which a rectangular recess is formed in the guide E for the movable Yrail H, as shown in Figs. 1 to et. The rail H carries one or more round studs or pins, I, which form the movable jaws of the tongs. A central lug, E', of the guide E is provided with a centrally- .riveted spring, F, at one side, and opposite thereto with a recess, r.

Upon the lug E of the guide E is placed a l semi-cylindrical sleeve, G, having an eye, r',

which receives the lu g E and its spring` F, and which forms, with the cylindrical pin I, the tongs for taking hold of the roving. When the sleeve G is in place on its lug E the bail portion of this sleeve plays loosely in the recess in said lug and is prevented from vertical displacement. If the movable'rail H is therefore carried' in one direction or the other, the tongs are either opened or closed. Upon each rail D are arranged sidewise of each other a number 0f tongs, while also severalendless belts can be arranged sidewise of each other. For this purpose the spring F is usedyby which the required degree of yielding is obtained, without which, even by a very accurate adjustment, no uniformly-closing contact of the tongs could be produced. The movable rail H, by the trans. verse motion of which the tongs are either closed or opened, carries at each end an antifriction roller, c. the right-handside, (see Fig. 7,) is conducted along the helical portion to fr of a guide-rail, s t, at one side of the frame, the movable rail His carried toward the left, and the tongs are closed thereby.

The tongs are kept closed by the motion of the roller c along the straight rail-section s t, which is parallel to the direction of motion, until the roller c at the opposite side of the movable rails H is acted upon by the inclined and curved portion u v of a corresponding rail at the opposite side of the frame. The movable rail I-I is carried back toward the right, and all the tongs are opened thereby and held in this position while returning, with the belt Gat the lower side of the same. The shape and length of the two curved and inclined guide-rails are such that the tongs are closed only when they are carried up entirely by the endless belt C, while they begin to open before they move downward with the belt, special care having to o be exercised that the down wardly-movin g tongs do not open until the upwardly-moving tongs at the other end have fully clamped the roving. l

The track which the pins I of the tongs describe is indicated by the dotted lines y y z s in Fig. 7

The endless belt and clamping-tongs are set in motion by a belt, e, and pulleys d d', while the belt mand the. pulleys ff' transmitthe motion to the roll L.

Fig. 6 shows a side view of the entire rovingframe, and Fig. 7shows a top view of the same as arranged for six yarns. y

It is obvious that the machine may be arranged for any number of yarns, which are first taken up -by the clamping-tongs, twisted slightly at that part between the conductingtongs K K K2 and the pressurerolls R Q, and at the same time drawn out, which is assisted by the slight twisting imparted by the tubes P. rIhe final twist is given between the tubes P and the rolls R Q. As continuallynew sections of the yarn are added to the parts already twisted, itis possible to deliver to the spinningframe uniformly drawn out and twisted yarns.

Having thus described my invention, I claim .as new and desire to secure by Letters Patent- 1. The combination of mechanism for deliverin g the roving, an endless belt or carrier and its carrying-rolls, clamping-ton gs equidistantl y arranged on the carrier, endwise-movable rods When the first roller c, on

IOC

IIO'

substantially as described.

3. The combination of mechanism for delivering the roving, an endless belt or carrier and its carrying-rolls, a jaw fastened to the carrier,4 provided with a yielding spring-acted'gripingsurface, an endwise-movable rod provided with a jaw which operates in conjunction with the jaw attached tothe carrier, cam-rails for actuating the rod, and means for actuating the carrier, substantially as described. zo

4. The jaws ot' the tongs, consisting of a recessed guide, E, having a vertical central lug, E', provided with arecess, 1', with front spring, Fhand a sleeve, G, having an eye,1",substan tially as described. 25

In testimony whereofl have signed my name to this specitication in the presence of two subscribin g witnesses.

y RICHARD SEHRKE. Witnesses: i

CARL FEHLERT, BERTHOLD R01. 

